Canadian adolescent tackle football coaches' helmet fitting experience, procedures, and beliefs for helmets and mouthguards effectiveness against injury. - Kolstad, Ash T; Soligon, Clara A; Laperrière, David; Galarneau, Jean-Michel; Russell, Kelly; Broglio, Steven P; Goulet, Claude; Hagel, Brent E; Emery, Carolyn A (International Journal of Sports Science & Coaching, 2026)